Home / 5,168.18-7,131.99-2,810.30

Finding the Fourth Proportional to 5,168.18, 7,131.99 and 2,810.30

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Solution

The fourth proportional to 5,168.18, 7,131.99 and 2,810.30 is: 3,878.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.18 : 7,131.99 = 2,810.30 : x
  2. Step 2: Convert to fraction form
    5,168.18/7,131.99 = 2,810.30/x
  3. Step 3: Cross multiply
    5,168.18x = 7,131.99 × 2,810.30
  4. Step 4: Simplify right side
    5,168.18x = 20,043,031.50
  5. Step 5: Solve for x
    x = 20,043,031.50/5,168.18
  6. Step 6: Final answer
    x = 3,878.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.